title: [The duration of preservation of plague pathogen strains with a different plasmid kit from a Central Caucasian high-altitude natural focus in the organism of citellophilus tesquorum fleas and the possibility of their transmission to laboratory animals].
abstract: Two plasmid variants of the main subspecies of the plague microbe circulate in a Central Caucasian high-altitude natural focus of plague. The strains of one plasmid variant fully correspond to the main subspecies of the plague pathogen in their characteristics. Those of the other are auxotrophic for proline, weakly virulent to one or both species of laboratory animals. The mountain subspecies of Citellophilus tesquorum fleas excretes the greatest quantity of plague microbe strains so the investigation of whether unblocked fleas can transmit the plague microbe is of interest.
authors.forename: N V
authors.initials: NV
authors.lastname: Zharinova
authors.forename: E B
authors.initials: EB
authors.lastname: Zhilchenko
authors.forename: O A
authors.initials: OA
authors.lastname: Koniaeva
authors.forename: N S
authors.initials: NS
authors.lastname: Serdiuk
authors.forename: O A
authors.initials: OA
authors.lastname: Zaĭtseva
mesh_terms: D000531:Altitude; D000818:Animals; D007303:Insect Vectors / Q000382:microbiology*; D051379:Mice; D050296:Microbial Viability; D010930:Plague / Q000382:microbiology* / Q000635:transmission; D010957:Plasmids / Q000235:genetics*; D011392:Proline / Q000378:metabolism; D012621:Seasons; D005423:Siphonaptera / Q000382:microbiology*; D015010:Yersinia pestis / Q000235:genetics / Q000254:growth & development* / Q000472:pathogenicity
chemical_list: D011392:Proline